Powder mixing and spraying device



3 Sheets-Sheet l 1 N VEN TOR.

BY 6M Oct. 9, 1934. F. R. MAURER I POWDER MIXING AND SPRAYING DEVICEFiled Sept. 25, 1932 Oct. 9, 1934. F. R. MAURER POWDER MIXING ANDSPRAYING DEVICE Filed Sept. 23, 1932 3 Sheets-Sheet 2 INVENTOR. fiDfi/VW/Pi/Z 640m, i1 *fiwfluif ATTORNEY.

Patented Oct. 9, I934 POWDER MIXING AND sPRnYrNG DEVICE 7 Frederick R.MaurrfDetroit, Mich; Application September 23,; 1932, Serial N0. 634,516' aol ims (cite-84) I l I V in sideelevation of a somewhat modifiedform I This invention relates to powder mixing and spraying devices, andmore particularly to a spraying device especially designed to beincorporated in a water pipe or hose line through v which water underpressure is delivered, to enable -the mixing of powders with such water,and spraying of the same in the form of a solution or mixture." Animportant object of this invention is the provision of a powder mixingand 10 spraying device which enables the spraying of insecticides mixedwith water from the nozzle of an ordinary garden hose. A further objectis the provision of such a spraying device the parts of which may beprin cipally housed within the hose itself in such 'manner that the hoseconstitutes. a powder container.

Still another object is the incorporation in such a device of improvedadjusting means'e'nabling varying the quantity of powder mixed with thewater flowing therethrough.

Still another object'lies in the provision of a mixing device which maybe secured to a hose line either atits end or at some medial point, orin a water pipe, which device incorporates a relatively large powdercontainer ar-' ranged outside thewater line, powder in which may be fedunder pressure into the water flowing through the line.

'Other objects and advantages will be apparent from the followingdescription, wherein reference is made to the accompanying drawingsillustrating preferred embodiments of my invention, and wherein similarreference numerals designate similar parts throughout the'several'views;

In'the drawings:

Figure 1 is a sectional view of the end of a garden hose, showing oneform of my invention installed thereinvand fragmentarily showing a hosenozzle in side elevation;

Figure 2 is an end view of the body portion of" Figure 12 is a' viewpartly in sectionand partly of the invention, showing the same alsoadapted to uselin connection with agarden hose, but

with an outside powder container affixed there- Figure 3, takensubstantially, on the line 17- 17 of Figure 16;

Figure 18 is a side view similar to Figure 4 of the adjusting screwemployed in this form of my invention;

Figures 19 and 20 are plan and diametrical sectional views respectivelyof the garden screen employed in this embodiment;

Figure 21 is a view partly in cross section and partly. in sideelevation of another somewhat modified form of the invention which isadapted to be inserted in a water line at any point;

Figure 22' is a sectional view taken substantially on the line 22-22 ofFigure 21;

Figures 23 and 24 are plan and longitudinal sectional views respectivelyof the guard screen employed in this'embodiment;

'Figures'25 and 26'are' end and medial sectional views respectively ofthe mixing unit; a

Figure 2'7 is a side view of theadjusting screw, and

Figure 28 is a longitudinal section of the water-feeding tube.

Referring now to the drawings: Reference characteri30 designates arubber garden hose, carrying at its end an exteriorly threaded couplingmember- 32, shown as of'conventional design. To'the" coupling 32 anadjustable spray nozzle as "34 'is frequently connected, toenablevariation of the character of the water jet? Between a the hose coupling32 and the nozzle coupling 36 is a gasket, usually in the former arubber washer 38. inserted spraying device; will be seen, to comprisethe familiar garden hose and nozzle of the type generally used forwateringpurposes about homesand small gardens. To enable persons"gardening on a small scale, or growing fruit or ornamental, trees orbushes to spray their growing things with powdered insecticide solutionsmixed with water without the necessity of mix This assembly, without; my

ing the powder with the water by hand and then forcing the solution ormixture from the nozzle a so,

tioned insecticide mixture.

of a special spraying device by means of a hand or special pump, and toprovide similar convenient spraying means for those desiring to spraydisinfectants, as in treating livestock, and for other purposes. Iprovide the mixing device shown installedi'n the hose' in Figure l','incon- The body portion 40 of the mixing device is a relatively smallcylindrical metallic 'member,

formed as best shown in Ei gures 2 and 3 and carrying at its upperextremity a' flange 42, which flange is enlarged by an auxiliaryflangelringf i ll The ,fiange ring 44'may be adapted to encircle thebody member 40pbeneath the flange, toenable' the suspension [ofthejdevice within 'the end of the hose by clamping theflangeformed bythe portions, 42 4 41 between the coupling 32 and gasket 38. Anaperture," the centralp'ortion of'which is designated 46', extendssubstantially axially through the body'of the mixing device, being"countersunk or otherwise enlarged at ,its rearextremity, as at 48, toform a funnel-shaped inlet portion intowhich'the powder is fed. Theaperture is also formed with alreduced "and tapered front portion '50,one side of which is open to the partly cylindrical adjoining chamber{521m which the. cylindrical valve portion 54 of an adjusting screw 56is'ad aptedto move to change the efiective sizeof the outletjportion ofthe aperture in a readily apparent manner; "The stem of the valve isthreaded in a tapped, continuation 58 of the bore 52. ,On the from thebore 64.

opposit'eside'of the aperture46, also in the body of the mixing member,is a i'earwardly opening bore 60 having a laterally opening orifice '62communicating. with'the portion 46 of the central powder'ieedingaperture and also havingvan' inclined communicating bore 64' terminatingin the front faceof'thedevice' adjacent the powder feeding bore/50''Theaperture 64'is designed to dischargea jet: of water angularly fromthe mixing device and'toward the powder extruded from :theorifice'50';injsuch'manner that they willbe quickly and thoroughly mixed within thev'66 forms, acoupling towhiclra relatively small flexible rubber tube maybe'attachedby slippi'ng 'thesame' thereover."".The rubbertube '70,.-

coupling tube 66 and connecting passages form a water by pass. The unitis installedih the hoseby removing :the nozzle and pushingthe small tube70 part way,d"own' .thereinto, a, short length of the small tube beingleft hanging out of'the e'ndlof thejhose, withthe mixing, unit attachedthereto. The hose is then compressed as by stepping 'on it, at a point'nearer its nozzle end than the container end of the inner tube '70. Thehose 30 is then filled with the desired insecticide powder which may behydrated lime, Paris green, arsenate of lead, or the like, or a mixture.The powder may be inserted in the hose with the aid of a funnel, the endof which may be easily inserted in the hose if the mixing unit isallowed to hang free outside the end of the hose at the end of the twoor three extra inches of the tubing 70 left at the nozzle end in themanner described. After the hose has been filled with powder, the mixingunit is slid into and clamped in place by means of the nozzle couplingin the manner shown. When the water is turned on, the pressure upon therear surface -0f the powder column tends to force'the powder through thecentral aperture 48-46 and from the orifice 50, while a quantity of thewater is delivered directly to the nozzle through the tubes 70 and 66and bore 64, the water so discharged mixing with the powder beingextruded from the orifice 50. in the manner described. Acertain amountof the'by-passed water also passes through the aligned orifices 6268connecting" the water and powder passages within themixing device, suchwater helping to force the powder from the nozzle and by itspressureloosening the same in mixing therewith. When the valve portion 54 of theadjusting screw is near the small outer end of'the orifice 50, theeffective size'of the latter is reduced, and the amount of powder whichcan be forced thereintoto be mixed with the. by-passed water'isrestricted, while when this, valve portion is moved inwardlytouthe'position infwhich it is shown in dotted'lines in Figure l, theorifice is opened. and a larger area made effective.

Covering the rear of the mixing unit may be a. guard screen as '72,whichmay, as shown, be formed as a cap adapted to fit over the enlarged1 5 counterbored portion 48 and prevent the passage of lumps of thepowdered material'into the mixing device. The screen may. of course beperforated, as at '74 and 76, for the passage therethrough of thestem ofthe adjusting screw 56 1 and. the'coupling tube 66 respectively.

In Figures ,12 to 20 inclusive I have shown a somewhatmodified form ofmy invent ion in which a powder container, external to the end. of thehose to which the entire device is attached, is incorporated with aspecial coupling member which carries means for affixing a powderjar orcan thereto and'for afiixing the assembly to the'end of the hose,together with a control valve and a mixing device for mixing; the powderand water, means for exerting pressure upon the powder and m'eans'forattaching a hosenozz'le' to the device, In Figure 12 referencecharacter 130 indicates the hose, and 73 i designates the body of, thedevice, which forms '3 acoupling memberfor the hose, the powder jar 8'0"and the nozzle 134. Water' underpre'ssure' is delivered to the base ofthefpowder mass within the jan 80'. through the water passage 82'.and

tube 84. Within the shell '78 'is arranged a 1 6:

in a manner analogous to the operation of the similar portions of thefirst described hoseinserted mixer. Water under pressure is delivered tothe central portion 146 of the mixing device through the passage 162,which functions similarly to the aperture 62 of the first describedembodiment, as does the water delivery borelfi i, through which Water isdischarged from the mix ing device in such manner that it isinstantaneously mixed with the powder extruded through the orifice 150in like fashion. An adjusting-screw 156 is also provided, by means ofwhich the rate of powder delivery may be regulated by turning the screwby means of a screw driver, (when the nozzle 134 is removed) and thespace 137 above the mixing device, as well as the space within the rearportion of the nozzle, provides a mixing chamber in which the turbulencecaused by the angular and forceful delivery of the water jet maysimilarly cause mixture of the water and powder. If a glass jar is usedit is of course possible to see the amount of powder remaining thereinat all times.

If desired a controlling valve 86 may be provided, adapted to be movedby the finger of the operator. For this purpose the finger piece 88 isprovided, formed as an integrally bent over section of the valve stem90, which finger piece is adapted to travel in a guide slot 92 formed inthe body of the device as shown in Figure 12. The tendency of waterpressure to maintain the valve in seated position may be augmented bycompression spring 94, encircling the valve stem, and the stem maytravel in a central aperture in the cork 96 which seals the aperturethrough which the stem passes. The cork may be retained in the enlargedupper portion 98 of the valve stem apertures by means of a spring washer100, the form of which is best shown in Figure 15, locked in a suitableinternal annular groove in the apertured portion 98 above the cork. Thislock washer also forms a seat for one end of the compression spring 94,the other end of which bears upwardly against another washer 99maintained in position upon the stem by the bend in its outer extremity.A suitable screen, as 172, may of course be arranged between the jarmouth and the powder inlet 148 of the mixing device, to guard the latteragainst being clogged by lumps.

Another somewhat modified form of my invention is shown in Figures 21 to28 inclusive. This device will at once be seen to be analogous to theconstruction shown in the embodiment last described, but adapted to beinserted at any point in a hose or pipe line, remote from the nozzle ifdesired, and to feed powder into the water stream. The body portion 278of the device may be formed as a screw cap for a jar 280, which may beof glass if desired, and a water inlet coupling member 230 may becarried by the top thereof and adapted to be screwed to a faucet or tothe end of a water pipe. Through the water passage 282 water isdelivered to the pressure pipe 284 which extends to a point adjacent thebottom of the jar in a manner similar to the arrangement of the pipe 84of the last described embodiment, while a connecting passage 2'70delivers water directly to the mixing unit 240 through the coupling tube266 which discharges into the water jet passage 264 opening adjacent thepowder outlet 250 in like manner. Water is also fed through the sideconnecting aperture 262 for preliminary mixture with the powderinthe-central sect'ion1246 of the powder orifice i'n'the mixing unit, ina manner similar toithe. operation of these portions of the firstdescribed embodiment. Apowder feeding ad;- justing screw 256 may also beprovided, and the downwardly opening tapered aperture 287 in the cap 278arranged to connect the mouth of the jar with the powderinlet 248 of themixing unit in a manner which will bev readily apparent. A- screen, as272, mayv of course be arranged across the open. lower end of. the

orifice .287'to similarly xprevent, the entrance of lumps of thepowdered material into the mixing unit.

My improved mixing device is also utilizable for any spraying of powderin conjunction with an air hose connected to any suitable source of airunder pressure, as a hand or mechanical pump. The air of coursefunctions in substantially the same manner as the water in forcing thepowder from the nozzle. I

While it will be apparent that the illustrated embodiments of myinvention herein disclosed are well calculated to adequately fulfill theobjects and advantages primarily stated, it is to be understood that theinvention is susceptible to variation, modification and change withinthe spirit and scope of the subjoined claims.

What I claim is:

1. In combination with a flexible hose through which fluid underpressure is adapted to be delivered, a coupling carried by the end ofthe hose and a nozzle member removably secured to the coupling, meansfor mixing powder with fluid delivered by the hose, including a quantityof powder within the hose, a mixing device arranged between the powdermass and the nozzle, and a relatively small flexible tube secured to themixing unit at one end and extending back into the hose away from thenozzle and open at its other end to provide a fluid by-pass throughwhich fluid may be delivered to a point adjacent the nozzle withoutforcing it to percolate through the powder.

2. In combination with a flexible hose through which fluid underpressure is adapted to be delivered, a coupling carried by the end ofthe hose and a nozzle member removably secured to the coupling, meansfor mixing powder with fluid delivered by the hose, including a quantityof powder within the hose, a mixing device secured in the end of thehose and having a portion clamped between the nozzle and couplingmembers, said mixing device having powder and fluid delivery passagesextending therethrough, and means connecting a fluid passage with apoint in the hose farther from the nozzle than the powder mass extends,comprising a. relatively small tube connected to the mixing unit andextending and opening into the hose.

3. A fluid and powder mixing device for mixing powder with a stream offluid under pressure, comprising a body having separate and terminallyconverging powder and fluid delivery passages therein terminating inadjacent powder and fluid outlets and connected by a by-pass through:comprising a Body 'rnernber' coupled to the hosev line and having aninlet opening therein through which it may receivewater irom'the hose,line, vsaidhody member havin also an outlet opening and appurtenantcoupling portion 'tozwhi'ch a nozzlex is adapted to be secured, a

tures themimoiie connecting theinlet and outletopenings, anotherconnecting said third openin and outlet, anda third. connecting theinlet and vthe interior of; the chamber portion of the mixingmeans,whereby to deliver fluid material :1

from both I the powder container and inlet directly to the-outlet, andto mix a quantityof water enteringthrough the hose with powder withinthe chambered portion of the mixing means, i V; V

v FREDERIQK MAURER.

